Dovetailed sheet metal or material.



Patented Dec. l7, l90l.

A. E. BROWN. DOVETAILED SHEET METAL 0B HATEBIAL (Application filed Mar. 26, 1901.)

2 Sheets-Sheet I.

(No Mildel.)

fizz/5222272:

Patented Dec. l7, l90l.

A. E. BRGWN.

DOVETAILED SHEET METAL 0B MATERIAL.

(Application filed Mar. 26, 19011 2 Sheets8heet 2.

(R0 Modal.)

. fizz/22271 MM; 5i

, UNITED STATES PATENT .OEFicE.

LEXAND R BROWN, on CLEVELAND, OHIO, ASSIGNOR. TO THE BROWN HOISTING MACHINERY COMPANY, A CORPORATION OF DELAWARE.

DOVETAILED SHEET 'M ETAL R MATERIAL.

SPECIFICATION forming part of Letters Patent No. 689,281, dated December 17, 1901.

' Application filed March 26, 1901. Serial lilo. 52,946- (No model.)

To all whom it may concern:

- ful article of manufacture of a character to be advantageously employed in a varietyot connections, especially for or in connection with'roofing, partitions, flooring, and like structural works; and I hereby declare the following to be a clear, full, and exact description thereof, reference being bad tothe accompanying drawings,makinga part of this application.

My invention relates to that class of man ufactured articles made up more generally from sheet metal, and thereby converted into a series of dovetail-shaped corrugations, the product being a form or species of structural material of largely-enhanced strength as co mpared with its previous form and which by reason of its acquired configuration is at the same time adapted to many new and desirable uses and purposes. For all uses, for instance, to which the ordinary sinuously-corrugated iron is now applied, as to constitute roofs, awnings, or walls,'and particularly in a special form of my manufacture that Iclaim herein it will be found that my said invention lends itself more readily and in a superior manner than any article of the kind that to my knowledge has yet been produced. So, too, when in similar uses it is desired toemploy cement or other plastic material as an exterior or interior coating, as is the case, to illustrate, in the species of building material shown and described in an application by me for Letters Patent in the United States, filed March 7, 1901, and being Serial No. 50,215,

are peculiar product and manufacture 1 present in this application will in all cases be available forthe purpose and to the highest degree.

To enable those skilled in the art to which my said invention relates to understand and use the same, I will now proceed to illustrate and explain the invention by reference to the said drawings.

' Figure I is a superficial view of my said dovetailed metal or material wherein the several corrugations have cross-sections of the same dimensions throughout their course.

Fig. II is a like view, but where said corru gations taper throughout their course a'nd therefore present cross'sect-ions of difierent dimensions in different parts or the several corrugations. Fig. III is an end or cross-sectional view of the metal or material shown in -:Fig. I across the line a and a therein. Fig.

IV is a like view across the line any in Fig. II.

In said drawings, A A are specimen portions of my said manufactured article, and B B and C 0 indicate the characterizing series of dovetailed corrugations in the same, as viewed from one front of said sheet. B .B'

and O" 0' make up the corresponding intervening series of similar corrugations. The latter series evidently correspond inevery particular with the series B 0, except that they are reversed as compared with said lattor series. In other words, the series B G and the series B G in no respect diifer, except that each member ofone series is re- -versed with respect to the adjacent member of the other series and is the complement thereof in any given specimen of the article in question. Alternating with a dovetailed corrugation B is a reversed dovetailed corrugation 13 throughout the entirepiece or sheet of the manufactured substance or material A or A constituting my invention.

Fig. III clearly presents the outline of the two series B and B composing the piece A and discloses, by means of the sectional views brb', that at any cross-section of said piece said dovetailed corrugations B and B are in each and every case similar one to the other.

Fig. II, however, presents a I variation or modification of the arrangement and relation of the complementing series that make up the piece A in the respect that the several features therein 0 0', corresponding with the corrugations B and B in the piece A, andtogether making up the piece A, are tapering, throughout their length, so that a cross-sec tion of the piece A at any point, as shown in Fig. IV, must show a series of alternately'-reversed dovetails c and 0', representing the several corrugations O and 0', each alternate member of the same being alike in dimensions.

The value of structural material made up shown in Figs. II and IV, will be especially appreciated in the construction of roofs, awnings, or Walls. Owing to the regular alternation of a larger corrugation C and a smaller corrugation C, as arranged in the piece A, it is plain that in laying a roof or awning or making an upright Wall or partition one piece 0 may be telescopically introduced into and made to overlap another in such manner as not only to break or overlap a joint, and thereby shed rain or moisture, but to also thereby interlock the entire spread of pieces 0' C that go to make up the root or wall in question.

In my application for United States Patent serially numbered 50,215,t0 whichI have here inbefore alluded, I make claim to a method of constructing material for roofs, floors, and the like which includes as an element the use of a medium that embodies my present invention. I therefore hereby disclaim in favor of said application and the invention covesaesi cred thereby the invention herein disclosed and claimed so far as it is an essential element of said invention; but all uses and purposes to which my presentinvention is adapted that do not essentially enter into the ,former invention and application I reserve for and desire toinclude in the claim herewith.

I therefore claim and desire to secure by Letters Patent-- An article of manufacture, consisting of a piece or sheet of metal, or other suitable material,having a series of dovetail-shaped corrugations, each of said corrugations having the same depth throughout its length and a taper which is reversed with respect to that of the next adjacent corrugation in'the series, substantially as shown and described.

ALEXANDER E. BROWN.

Inpresence of- J. B. WVILBERDING, GEORGE C. WING. 

